Should my friend get a lawyer?

Hello.

I have a question, I have never been in the US ever, but I have a friend who is there, he has a tourist visa, but he got offered a job from a guy who need it help because of the pandeic, my friend did the job for a month (with other people, 15).

The person who hire them all didn't pay them, yes I know that happens a lot, but is there something they can do? they saw this man recluting more people, hell sure do the same.